<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        ref="login_form"
        :model="login_form"
        :rules="rules"
        class="login_form"
      >
        <el-form-item prop="username">
          <!-- el-icon-user-solid -->
          <el-input
            v-model="login_form.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <!-- iconfont icon-3702mima -->
          <el-input
            type="password"
            v-model="login_form.password"
            prefix-icon="iconfont icon-3702mima"
          ></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      login_form: {
        username: '',
        password: '',
      },
      rules: {
        username: [
          { required: true, message: '用户名不能为空！', trigger: 'blur' },
        ],
        password: [
          { required: true, message: '密码不能为空！', trigger: 'blur' },
          {
            min: 6,
            max: 18,
            message: '长度在 6 到 18 个字符',
            trigger: 'blur',
          },
        ],
      },
    }
  },

  methods: {
    resetLoginForm() {
      //重置表单
      this.$refs.login_form.resetFields()
    },
    login() {
      // console.log(this);
      // console.log(this.login_form);
      this.$refs.login_form.validate(async (valid) => {
        //不通过校验
        if (!valid) return
        //发送请求到服务器
        const { data } = await this.$http.post('/login', this.login_form)
        if (data.meta.status != 200)
          return this.$message({
            message: '用户名或者密码不正确',
            type: 'error',
          })
        this.$message({
          message: '登录成功！',
          type: 'success',
        })
        //通过导航路由 跳转到Home页面
        window.sessionStorage.setItem('token', data.data.token)
        this.$router.push('/home')
      })
    },
  },
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>